a = int(input())

if 600 > a >= 400:
    print(8)
elif 800 > a >= 600:
    print(7)
elif 1000 > a >= 800:
    print(6)
elif 1200 > a >= 1000:
    print(5)
elif 1400 > a >= 1200:
    print(4)
elif 1600 > a >= 1400:
    print(3)
elif 1800 > a >= 1600:
    print(2)
elif 2000 > a >= 1800:
    print(1) a = int(input()) a int(input()) int input() input if 600 > a >= 400:
    print(8)
elif 800 > a >= 600:
    print(7)
elif 1000 > a >= 800:
    print(6)
elif 1200 > a >= 1000:
    print(5)
elif 1400 > a >= 1200:
    print(4)
elif 1600 > a >= 1400:
    print(3)
elif 1800 > a >= 1600:
    print(2)
elif 2000 > a >= 1800:
    print(1) 600 > a >= 400 600 > a 600 a 400 print(8) print 8 elif 800 > a >= 600:
    print(7) 800 > a >= 600 800 > a 800 a 600 print(7) print 7 elif 1000 > a >= 800:
    print(6) 1000 > a >= 800 1000 > a 1000 a 800 print(6) print 6 elif 1200 > a >= 1000:
    print(5) 1200 > a >= 1000 1200 > a 1200 a 1000 print(5) print 5 elif 1400 > a >= 1200:
    print(4) 1400 > a >= 1200 1400 > a 1400 a 1200 print(4) print 4 elif 1600 > a >= 1400:
    print(3) 1600 > a >= 1400 1600 > a 1600 a 1400 print(3) print 3 elif 1800 > a >= 1600:
    print(2) 1800 > a >= 1600 1800 > a 1800 a 1600 print(2) print 2 elif 2000 > a >= 1800:
    print(1) 2000 > a >= 1800 2000 > a 2000 a 1800 print(1) print 1 a = int(input()) int(input()) a
a = int(input())

if 600 > a >= 400:
    print(8)
elif 800 > a >= 600:
    print(7)
elif 1000 > a >= 800:
    print(6)
elif 1200 > a >= 1000:
    print(5)
elif 1400 > a >= 1200:
    print(4)
elif 1600 > a >= 1400:
    print(3)
elif 1800 > a >= 1600:
    print(2)
elif 2000 > a >= 1800:
    print(1)